Home / 426,091.48-639,027.86-126,502.55

Finding the Fourth Proportional to 426,091.48, 639,027.86 and 126,502.55

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Solution

The fourth proportional to 426,091.48, 639,027.86 and 126,502.55 is: 189,721.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,091.48 : 639,027.86 = 126,502.55 : x
  2. Step 2: Convert to fraction form
    426,091.48/639,027.86 = 126,502.55/x
  3. Step 3: Cross multiply
    426,091.48x = 639,027.86 × 126,502.55
  4. Step 4: Simplify right side
    426,091.48x = 80,838,653,811.04
  5. Step 5: Solve for x
    x = 80,838,653,811.04/426,091.48
  6. Step 6: Final answer
    x = 189,721.36

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.